.layout {
  height: 100%;
}
.header {
  background-color: #fff;
}
.title {
  line-height: 64px;
  font-size: 18px;
  color: white;
  text-align: center;
  letter-spacing: 1px;
}
.body {
  width: calc(100% - 40px);
  height: calc(100% - 40px);
  margin: 20px;
  border-radius: 10px;
  background-color: #fff;
}